Global Positioning System (GPS) satellites

GPTKB entity

Predicate	Object
gptkbp:instanceOf	gptkb:satellite
gptkbp:constellationShape	6 orbital planes
gptkbp:countryOfOrigin	gptkb:United_States
gptkbp:elevation	~20,200 km
gptkbp:fundedBy	gptkb:U.S._Department_of_Defense
gptkbp:generation	gptkb:Block_III gptkb:Block_I gptkb:Block_II gptkb:Block_IIA gptkb:Block_IIF gptkb:Block_IIR gptkb:Block_IIR-M
gptkbp:inclination	55 degrees
gptkbp:launchDate	1978
gptkbp:manufacturer	gptkb:Lockheed_Martin gptkb:Boeing gptkb:Rockwell_International gptkb:Northrop_Grumman
gptkbp:numberOfSatellites	at least 24 operational
gptkbp:operatedBy	gptkb:United_States_Space_Force
gptkbp:orbitType	gptkb:Medium_Earth_Orbit ~12 hours
gptkbp:partOf	gptkb:Global_Positioning_System
gptkbp:providesService	global coverage military users civilian users free to users worldwide
gptkbp:relatedTo	gptkb:Galileo gptkb:BeiDou gptkb:GLONASS
gptkbp:signalAccuracy	centimeter-level (with augmentation) within a few meters (civilian)
gptkbp:status	operational
gptkbp:successor	NAVSTAR satellites
gptkbp:transmission	navigation messages precise time signals
gptkbp:type	L-band radio signals
gptkbp:usedBy	gptkb:maritime_navigation gptkb:military_operation aviation telecommunications emergency services surveying land navigation
gptkbp:usedFor	gptkb:navigation positioning timing
gptkbp:bfsParent	gptkb:Lockheed_Martin_Corporation
gptkbp:bfsLayer	7
http://www.w3.org/2000/01/rdf-schema#label	Global Positioning System (GPS) satellites